I know about Picassa I use it and it doesnt do enough for my liking terribly limited

Watermarking or the ability to whack some text on the photo is all i care about.
Im an avid fan of fireworks. Though How does fireworks cope on the dell mini? isn't it too bulky and clunky? I was hoping for a slimer, lighter open-source option to be honest...
EDIT:- Silly me Ive figured it out in picasa, however its not as adept as fireworks for putting text on, if anyone has a slimer version that does a better job please tell thanks!